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We are ready for NervesConf EU .
This conference is co-located with Goatmire Elixir and the Elixir part is essentially sold out. Occasionally a ticket may become available as someone can't make it.
Biggest NervesConf ever :)
140 ticket holders for NervesConf EU.
- Hardware development
- A Nerves Car
- Hydro power plants
- Alarms
- Modems
- Drones
- eInk hacking
Project updates
Buildroot updates
This is a bug fix update for 1.32.0.
- Package updates
This is a bug fix update for 1.31.4.
- Package updates
This is a bug fix update for 1.31.5. It contains many CVE fixes from the Buildroot patch updates and a fix for libcamera support on the Raspberry Pi 5. Previous Raspberry Pis have no changes.
Note: systems based on this have not been release yet.
If you want to try RPi5 with camera support, build off of nerves_system_rpi5 branch `main`.
Changes
- Added rpi-libpisp package to support the Raspberry Pi 5’s image processor
- Updated the rpi-libcamera package to check if rpi-libpisp is available and enable the pipeline if so.
Package updates
- Buildroot 2025.02.5 . Also see Buildroot 2025.02.4
System updates!
This is a security/bug fix release.
Package updates
Important derived package updates
nerves_system_mangopi_mq_pro, v0.13.2
nerves_system_vultr, v0.28.2
nerves_system_x86_64, v1.31.2
nerves_system_grisp2, v0.15.2
nerves_system_osd32mp1, v0.22.2
nerves_system_bbb, v2.27.2
kiosk_system_rpi5, v0.4.2
kiosk_system_rpi4, v0.4.2
nerves_system_rpi5, v0.6.2
nerves_system_rpi4, v1.31.2
nerves_system_rpi3a, v1.31.2
nerves_system_rpi3, v1.31.2
nerves_system_rpi2, v1.31.2
nerves_system_rpi, v1.31.2
nerves_system_rpi0, v1.31.2
nerves_system_qemu_aarch64, v0.1.0
Initial release.
The idea behind and plans for this system were covered in a previous newsletter. You can also read the blog posts about it.
Still early days.
Other updates
nerves_key, v1.3.0
There should be some more writing about this feature and usage of it at some point. But
the config documentation
should give a decent enough idea of what it can be used for. This allows locking down more of your device using the ATECC608 if you are provisioning it yourselves. Limitato
- Support volatile keys to allow access to secret storage as long as it’s powered. Cutting the power via a tamper switch or any other means requires reauthorization. Thanks to @lawik for this feature.
- Support the REUSE specification for licensing and copyright
- Support authorized key usage via volatile key on ATECC608 (Thanks to @lawik)
- Fix Elixir 1.19 warnings
- Drop Elixir 1.13 support
Added
- Add a client callback for when the device is connected (#312) (Thanks @amclain)
- Enable per-message WebSocket compression via Mint extensions (#318)
Updated
- Don’t create duplicate Disconnected alarms (#317)
- Clear previous CheckFailed alarms before setting a new one (#317)
- Support the use of :alarm_handler for health reports, removing the Alarmist requirement (#317)
Fixed
- SSL: cacerts no longer override cacertfile (#321) (Thanks @D4no0)
Document application config keys. These are now official. If you had been modifying the application config for regression tests, note that the :env key is now :fwup_env and :revert_fw_path is now ops_fw_path.
Add Nerves.Runtime.firmware_slots/0 to return a map indicating the currently running slot and the one that will be run on next boot. Please update any calls to get "nerves_fw_active" directly from Nerves.Runtime.KV since the new firmware_slots/0 is more accurate and handles more scenarios on Nerves devices.
Add firmware_validation_status/0 to allow callers to know whether the status is really unknown. This isn’t possible with firmware_valid?/0 which is problematic since unknown could mean that the U-Boot environment is unreadable and a fix is needed. Instead firmware_valid?/0 returns true in that case since this could be an old Nerves device without validation.
Replace call to Busybox mount to determine filesystem read-only status with a module that reads /proc/self/mountinfo.
Expose mount information via Nerves.Runtime.MountInfo. If you had been using MountParser, please update your calls. MountParser was not intended to be public API (@moduledoc false) and was removed.
Serialize calls to fwup to reduce chance of accidental eMMC/MicroSD corruption
Bulletproof many functions to return errors if the :nerves_runtime application stops. This can happen when the device is not in a good state and raising in NervesRuntime KV and FwupOps functions made things worse. This should be a rare case.
Nerves Meetup
September (US), meetup details
Go check out the meetup, arranged by Alex at Redwire Labs. Last wednesday of every month. They pull a good crowd consistently.
Got questions?
Trouble-shooting is best done on the Nerves Forum over at Elixir's Forum. But if you have big-picture questions you would like to ask around Nerves, feel free to send them in and we might just have ourselves a column here.
Nerves and Elixir shirts can be bought at
oswag.org
. Stickers with every purchase.
-Lars
Participating in the community
The Nerves community is found wherever Elixirists gather. Try any of the following:
Questions are best asked on the Elixir Forum .
Social conversation and banter:
- Elixir Slack , #nerves channel
- Elixir Discord , #nerves channel
How you can help Nerves
Contribute in the way that works for you:
- Send corrections or improvements for documentation wherever it fails to help you.
- Write about Nerves, give talks about Nerves. Make videos about Nerves. It is all good.
- Write or port a new hardware library and include it in the Elixir Circuits collection .
- Get in touch about taking over maintenance duties for some libraries, we might be able to provide you hardware.
- Apply for an EEF stipend on something Nerves-related and build it. We can help if you have questions about this.
Finally, if you have questions about the newsletter or want to suggest something you can simply respond to this email.
- Lars
